Internal Comments in Mailbox integration Follow

HI! 

I'm Sergey from the Youtrack Team. 

Thank you for the post. I'll be happy to help you. 

Firstly, in this case, you should have a group assigned to this project that would consist of the users you want to make the comment visible to. 

Then you can leave a private comment visible to this group following these steps: 

• if you add a comment on the issue's page directly, just change its visibility to the private group and post the comment. See the screenshot: https://take.ms/AgQro 
• if you want to leave such a private comment by sending an email, then you can create an on-change workflow. Workflows help automate various processes in your Youtrack. In your case, you will use it to send an email that would be posted as a comment with the changed visibility. 

For example, you can add a rule that when a comment is added, you want to set the comment's visibility to <group>. For that, you can use permittedGroups property of the IssueComment entity. Please see: https://www.jetbrains.com/help/youtrack/standalone/v1-IssueComment.html To let the workflow know which comment should it change, I can suggest using a specific word/phrase like #privatecomment and make sure that the workflow checks the comment for it and only then executes a group visibility change. 

Hope this information helps. 

If you have any questions, please let me know.